Back to EveryPatent.com
United States Patent | 5,704,055 |
George ,   et al. | December 30, 1997 |
A data processing system has a processing unit and a memory which provides a common pool of physical storage. This storage is initially assigned as either main storage or expanded storage during power on. Subsequent to the initial assignment, storage assigned as main storage or expanded storage may be unassigned and thus returned to the common pool. Once returned to the common pool, the storage may be reassigned as either main storage or expanded storage. The storage reassignment is done dynamically without requiring a reset action and transparent to the operating system and any active application programs.
Inventors: | George; Jonel (Pleasant Valley, NY); Glassen; Steven Gardner (Wallkill, NY); Krygowski; Matthew Anthony (Hopewell Junction, NY); Kim; Moon Ju (Wappingers Falls, NY); Preston; Allen Herman (Poughkeepsie, NY); Stucki; David Emmett (Poughkeepsie, NY) |
Assignee: | International Business Machines Corporation (Armonk, NY) |
Appl. No.: | 635537 |
Filed: | April 22, 1996 |
Current U.S. Class: | 711/2; 711/200 |
Intern'l Class: | G06F 012/00; G06F 013/00 |
Field of Search: | 395/401,402,410,411,412,413 364/DIG. 1,DIG. 2,243.2,245.31,246.3,228.2,230.2 |
4128875 | Dec., 1978 | Thurber et al. | |
4456954 | Jun., 1984 | Bullions, III et al. | |
4674038 | Jun., 1987 | Brelsford et al. | |
4695950 | Sep., 1987 | Brandt et al. | |
4742450 | May., 1988 | Duvall et al. | |
4754394 | Jun., 1988 | Brantley, Jr. et al. | 395/412. |
4779188 | Oct., 1988 | Gum et al. | |
4785392 | Nov., 1988 | Maier et al. | |
4792895 | Dec., 1988 | Tallman. | |
4831541 | May., 1989 | Eshel. | |
4843541 | Jun., 1989 | Bean et al. | |
4926322 | May., 1990 | Stimac et al. | 395/425. |
4945480 | Jul., 1990 | Clark et al. | |
4980822 | Dec., 1990 | Brantley, Jr. et al. | 395/412. |
5280599 | Jan., 1994 | Arai | 395/425. |
5341484 | Aug., 1994 | Tanaka et al. | 395/400. |
5479631 | Dec., 1995 | Manners et al. | 395/465. |